Question

All- I have an app in which the user inputs values into multiple edittext fields and than the user taps a button to calculate all the numeric inputs into a formula and outputs the answer. My problem is that when one of the edittect fields is left empty the app force closes when the calculate button is hit. I know I can fix this by having an alert dialog box pop up when the calculate button is hit and there are one or more empty edittext fields. I don’t know how to put the alert dialog inside of an “if” statement. For example “if any one of the edittext fields are empty .show() this alert dialog”. Could someone please give me some sample code.

Answer 1

If you have (or create) an array/list of all the EditText fields, you can run through them like this

for(EditText e : editTextList)
{
    if(e.getText().toString().length() == 0)
    {
        //Show dialog 
        break;
    }
}

You can create a list of EditTexts like this:

List<EditText> editTextList = new ArrayList<EditText>();

and then just add

editTextList.add(myEditText);